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Nobody seems to mention the plugin Tree Tabs here: https://addons.mozilla.org/en-US/firefox/addon/tree-tabs/ https://addons.mozilla.org/en-US/firefox/addon/tree

by SZJX 8y ago

Nobody seems to mention the plugin Tree Tabs here: https://addons.mozilla.org/en-US/firefox/addon/tree-tabs/ https://addons.mozilla.org/en-US/firefox/addon/tree-tabs/, which IMHO is a much better alternative.